I have installed my system without LVM but I need it now.
How can I repartition my disk with LVM and keep all my system files?
I know this would need backup, but I have never used it yet and don't know wich tool would best suit that situation.
If you have some free disk space you can do this. But this can be long and not so sample process. The best you can do is to copy your personal files to external disk or cloud storage. The commands with can help you to pack the files in bundles (if you have a lot of small files) are
The process of replacing current disks with LVM is in few words:
After you finish with root partition you will need to edit
/etc/fstab and update grub